diff --git a/zigbee2mqtt/config.json b/zigbee2mqtt/config.json
index c47f9236c..b891fb9f4 100644
--- a/zigbee2mqtt/config.json
+++ b/zigbee2mqtt/config.json
@@ -60,7 +60,8 @@
       "key": "str?",
       "cert": "str?",
       "user": "str?",
-      "password": "str?"
+      "password": "str?",
+      "base_topic": "str?"
     },
     "serial": {
       "port": "str?",